题目内容

An international treaty signed several years ago bans trade in plants and animals of endangered species.

A. forbids
B. eliminates
C. promotes
D. protects

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People of diverse backgrounds now fly to distant places for pleasure， business or education.

A. different
B. distinctive
C. similar
D. separated

The recent findings are also applicable to other areas of design engineering.

A. practical
B. relevant
C. convenient
D. comparable

乙醇引起脂肪肝的机制是()。

A. 乙醇降低脂肪酶活性，肝内脂肪合成增加
B. 乙醇代谢产物乙醛加速，脂肪向肝细胞内积聚
C. 反复感染引起脏器脂肪变
D. 营养不良
E. 肝细胞摄取脂肪增强

该患者因反复患感染性疾病应排除()。

A. 慢性阻塞性肺病
B. 蛋白质营养不良
C. 肾盂肾炎
D. 心肾综合征
E. 糖尿病